I also have an 89 V6 Raider, and had a similar issue. Total brain fart right now (horrible day at work), but this little gems wiring connectors was fighting me tooth and nail, but I figured out the connector was the issue. It is the part right by the coil, on the same bracket.
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89 SWB, V-6 5SPD, OME Shocks, 16.5X37's, 2"BL, SR axle, Gen2 brakes, Lincoln w/Superwinch